Henry c



UNITED STATES PATENT OFFICE.

HENRY O. REIGHARDT, OF POTTSVILLE, PENNSYLVANIA, ASSIGNOR TO THEAMERICAN DIAMOND ROCK BORING COMPANY, OF NEW YORK, N. Y.

SWIVEL FOR DRILLS.

SPECIFICATION forming part of Letters Patent No. 304,857, datedSeptember 9 1884-.

7 Application filed May 21, 1884 (No model.)

To all whom/it may concern:

Be itknown that I, HENRY O. REIOHARDT, of Pottsville, in the county ofSchuylkill, State of Pennsylvania, haveinvented a new and use fulImprovement in Swivels, of which-the followingis such full, clear,andexact description as will enable others skilledin the art to make anduse the same when taken in connection with the accompanying drawings, inwhich- Figure 1 is a viewof the head and the water-pipe, part of thelatter being in dotted lines. Fig. 2 is aview of the swivellink. Fig. 3is a vertical section of the two as combined, showing a view of thewater-pipe. Fig.4 is a view of the water-pipe. Fig. 5 is an end View ofthe thimble. Fig. 6 is a vertical section of the same.

This my inventionis intended to be applied to drill-rods of the formused with diamondpointed drills, wherein a stream of water is passedthrough the drill-rod and drill, but is equally well adapted to otherforms of drills, drill-rods, and other like devices whereby a stream ofwater may be supplied to the drillrod, and the drill-rod may be hoistedby suit able tackle attachedthereto.

, Heretofore, and before this my invention, it has been difficult todraw from thehole bored the drill and drill-rod by which it was drilled,and when a water-connection was maintained with the drill-rod it becamenecessary to remove the pipe-connections and substitute for them an eyeor hook by which to attach the tackle to raise the rod.

This my invention consists of a head and swivel-link thereto attached,to which the up per part of the drill-rodjs connected, so. that the rodwill be free to turn in the swivelwithout turning it, in providing awater-passage to connect with the drill-rod, and the various 1combinations hereinafter specified and set forth.

The swivel-link A of the drawingsis made in the form in which swivelsordinarily are made, consisting of aloop and sleeve or socket, a.

The head B is made with a spindle, G, and shoulder D. The spindle 0being made with a small thread thereon to enter the end of the Theswivel-link Ais put on the spindle E and secured thereon by the nut H. Asoft-metal or brass washer, K and L, is put on the spindle E, on eitherside of the link, to keep the shoulder G, nut H, and link A from wearingaway;

The apparatus thus made may be used on drill-rods which do not havewater supplied to them; but when water or other fluid or air is suppliedthrough the drill-rod, the parts hereinafter described are used.

The interior of the lower spindle, O, is cut away up to the shoulder M,and the lower portion thereof is provided with a female screw.

The pipe N is made of suffieient length to pass through the length ofthe head B and of such size as to fit closely within the head B.

At or near the end of the pipe N is provid ed the projection or ring 0,and at or nearthe other end is a screw-thread. The pipe N is put in thehead B, so that the ring 0 comes against the shoulder M of the head andthe other end of the pipe N projects above the upper end of the spindleE. i

The hollow thimble P ismade with a thread on the outside thereof, ofsuch a size as to fit within the spindle O, and after the pipe has beeninserted in the head B, so that the ring 0 is against the shoulder M,this thimble is insertedin the end of the spindle O, and screwed up soas to hold the ring Oin place. Packing is put around the pipeN next thering O, so that it will be between the ring O and the shoulder M. Thethimble is preferably made of brass or soft metal, to avoid wearing thering 0, against which it comes.

To the upper end of the pipe N is attached a connection with awater-supply, preferably by means of an elbow-joint.

The spindle O is screwed into the drill-rod securely, and water suppliedthrough the rod N, the head B and drill-rod being free to turn(No-Model.)

' H. 0. REIOHARDT.

SWIVEL FOR DRILLS.

N PETERS. Hwm-umo vher. Washington. 0. c,

Patented Sept. 9, 1884.

INVENTOR ATTORNEY I

